Mitsubishi Electric AnyWire DB A20, Handbook

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6
REPLACING THE I/O MODULES
6
- 17
(6) Comparisons between AJ55TB2-16T and A20PB-16U
: Compatible, : Partially changed, ×: Not compatible
*1 When used on 12VDC, consider the use of an external relay.
Specifications AJ55TB2-16T A20PB-16U
Compat-
ibility
Precautions for
replacement
Number of output points 16 points 16 points
Insulation method
External output
↔
Internal circuit:
Photocoupler
Internal circuit ↔ Transmission circuit:
Not insulated
External output
↔
Internal circuit: Not insulated
Internal circuit ↔ Transmission circuit:
Photocoupler
The insulated locations are
different.
Output type Sink type Sink type
Rated load voltage 12/24VDC 24VDC
12VDC cannot be used.
*1
Operating load voltage
range 10.2 to 30VDC
(peak voltage 30VDC)
21.6 to 27.6VDC
(ripple voltage 0.5Vp-p or less)
Operating voltage range is
different.
Maximum load voltage
0.5A/point
5A/common
0.2A/point
3.2A/common
The maximum load current
per point has decreased.
Check the specifications of
the load to be used.
Maximum inrush current 4.0A, 10ms or less 500mA or lower
Inrush current has decreased.
Check the specifications of
the load to be used.
Leakage current at OFF 0.1mA or lower 0.1mA or lower
Maximum voltage drop at
ON 0.9VDC or lower (TYP.) 0.5A
1.5VDC or lower (MAX.) 0.5A
1V or lower
Check the specifications of
the load to be used.
Response
time
OFF

ON 2ms or less 1ms or less
ON

OFF 2ms or less (resistance load) 1ms or less
Surge suppressor Zener diode None ×
The surge suppressor is not
built-in.
Common terminal
arrangement 16 points per common
(2-wire type terminal block)
16 points per common
(2-wire type terminal block)
Operation indicator ON indication (LED) ON indication (LED)
External wiring method
40-point terminal block (M3 screw)
Transmission circuit included
30-point terminal block (M3 screw)
Transmission circuit included
Wiring must be changed.
Existing wires can be used but
applicable crimping terminals
are different.
For details, refer to Section
6.3.
Applicable wire size
0.75 to 2mm
2
0.3 to 1.25mm
2
(when the following applicable crimping
terminals are used: 0.75 to 2mm
2
)
Applicable crimping
terminal
1.25-3, 1.25-YS3A,
2-S3, 2-YS3A
V1.25-3, V1.25-YS3A,
V2-S3, V2-YS3A
For wire sizes 0.75 to 2mm
2
R2-3SL, RAV2-3SL, RAP2-3SL,
VD2-3S, VD2-3.5SS, VD2-3.5S,
VDAV2-3.5SS, VDAV2-3.5S
External
power
supply
Voltage 10.2 to 30VDC – – The A20PB-16U external
power supply and the I/O
module power supply are
shared.
Current
120mA
(24VDC TYP. per 1 common)
– –
I/O module
power
supply
Voltage
15.6 to 27.6VDC
(peak voltage 27.6VDC)
21.6 to 27.6VDC
(ripple voltage 0.5Vp-p or less)
Operating voltage range is
different.
Current 70mA 33mA
Because the external power
supply and the I/O module
power supply are shared, the
consumed current is
decreased.
External dimensions 50(H) × 177(W) × 66(D) mm 40(H) × 140(W) × 60(D) mm The shape is different.
Installation method
Screw mounted Screw mounted ×
Because mounting hole size is
different, reworking is
required.
Mounted to DIN rail Mounted to DIN rail
The A20PB-16U can be
mounted to the existing DIN
rail.
Weight 0.4kg 0.18g